#### Answer

$3$

#### Work Step by Step

Note that $64=4^3$.
Write $64$ as $4^3$ to obtain:
$=\log_4{(4^3)}$
Use the rule "$\log_b{(b^x)}=x$" to obtain:
$\log_4{(4^3)} = 3$

Published by
Pearson

ISBN 10:
0-13417-894-7

ISBN 13:
978-0-13417-894-3

$3$

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